It's pretty alarming. I work west of Sacramento (not near the impact area), but close enough that we are getting the requests for aid. In addition to housing people, concern about pets and animals belonging to people who are going to hotels and shelters that can't take animals.

There's another big dam (Lake Berryessa) that may crest it's spillway, but that one is better designed so I haven't seen anything suggesting worry to the structural integrity of the whole dam.

There's plenty of other damage in northern California too- flooding and mudslides.

edit: apparently they were successful in dropping the water level far enough to rescind the evacuation order, although with a warning that it could be re-issued. Rain starts up again tomorrow night.